Signature gage foe book sewing machines



(No ModeL) E. F. GONE.

SIGNATURE GAGE FOB BOOK SEWING MAGHINES. N 358,594. Patented Mar. 1, 1887.

M Q/ M W V \f NI'IED STATES PATENT CFFICE.

EUGENE F. CONE, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE SMYTH MANUFACTURING COMPANY, OF SAME PLACE.

SIGNATURE-GAGE FOR BOOK-SEWING MACHINES.

SPECIFICATION forming part: of Letters Patent No. 358,594, dated March 1, 1887.

(No model.)

To all whom, it may concern.-

Be it known that I, EUGENE F. CONE, of Hartford, in the county of Hartford and State of Connecticut, have invented an Improvement in Book-Sewing Machines, of which the following is a specification.

In Letters Patent No. 220,312, granted Octoher 7, 1879, to D. M. Smyth, the signatures are laid in succession upon arms that are revolved around progressively, and raised to bring the signature up to the place of sewing, and then drawn down and out of the sheet after it is sewed. In this class of book'sewing machines there is also a gage upon the arm to determine the position of the folded signature lengthwise upon said arm. In some book-sewing machines all the needles and the loopers act in one direction, and tend to move the sheet along farther toward the end of the arms.

My invention relates to the combination, with the arms npon which the sheets are held while being sewed, of a fence or gage against which the heads of the folded signatures are received, so that they are sustained and kept in the proper positions relatively to the sewing mechanism, and there is no risk of the head or top edge of the book being irregular.

In the drawings, Figure 1 is a plan view showing my improvement. Fig. 2 is an elevation of the fence and a portion of the sheet supporting arm, and Fig. 3 is a plan of the arm and clip.

The arm 6 is the same as shown in the aforesaid patent, and the mechanism for sewing is of any desired character-such, for instance, as that shown in Letters Patent No. 338,000, and the same does not require to be represented.

The arm 6 is provided with the end gage or clip, f, as shown in Letters Patent N 0. 250,988 5 or it may swing as shown in Letters Patent No. 220,312. After the sheet or folded signature is laid upon the said arm, this gage or clip determines the position of the head and holds the sheet until it is brought around to place and raised up to the sewing mechanism. In this operation the arm e comes close to the bend or angle 3 at the end of the fence 2. This fence 2 is in the proper position for the heads of the signatures 4 to come against the same, as seen in Fig. 1, and the fence is supported in any suitable manner. I have shown a standard, 8, on the book-sewing machine, a screw, 7, and slotted plate 12, so that the fence itself may be moved to occupy the proper place. 5 5 The cam-piece 10 is shown as extending below the plate 12, with the fence 2 riveted to the plate 12; but these parts may be made separately and held by the one screw 7. The cam-piece 10 is inclined, so that the gage or elipf is swung or slid as the arm e is raised; but the signature itself cannot move endwise upon the arm during the sewing operation, because the head of the folded signature at the back of the arm comes against the fence 2 and is kept in position thereby, and the heads of the previously-sewed signatures are against said fence 2, so that they cannot be displaced or become irregular in consequence of the pull of the threads under the action of the loopers or needles, being endwise of the folded signatures.

In some book-sewing machines the arm e and the gagef draw down out of the signature before the sewing operation is completed, and 7 5 the pull of the threads in sewing being endwise, the signature is not always sufficiently supported by the one..side of the folded head that comes against the fence 2. This is espe cially the case with thin paper. To guard against this difficulty, I make use of the spring 15, that is fastened at one end to the plate 12, and the other end rests upon the top of the arm e at the end of the folded back of the signature as said arm brings the signature up to 5 the place when it is sewed; hence this spring remains as a gage to prevent the signature being moved endwise after the arm and gage have been drawn down out of the signature.

I claim as my invention 1. The combination,with the signatu re-holding arm, in a book-sewing machine, of the stationary fence or gage against which the heads of the folded and sewed signatures rest while the sewing is being performed, substantially as set forth.

2. The combination, with the signature-holding arm, of the fence against which the heads of the folded signatures are received and. the spring 15, theend of which is in line with the :00 fence, for the purposes and substantially as set forth.

Signed by me this 3d day of August, A. D. 1886.

EUGENE F. CONE. Witnesses:

W. B. MoCRAY, Guns. E. PARKER. 

